129629 has 2 divisors, whose sum is σ = 129630. Its totient is φ = 129628.

The previous prime is 129607. The next prime is 129631. The reversal of 129629 is 926921.

129629 is nontrivially palindromic in base 14.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 76729 + 52900 = 277^2 + 230^2 .

It is an emirp because it is prime and its reverse (926921) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-129629 is a prime.

Together with 129631, it forms a pair of twin primes.

It is a Chen prime.

129629 is an undulating number in base 14.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64814 + 64815.

It is an arithmetic number, because the mean of its divisors is an integer number (64815).

2¹²⁹⁶²⁹ is an apocalyptic number.

It is an amenable number.

129629 is a deficient number, since it is larger than the sum of its proper divisors (1).

129629 is an equidigital number, since it uses as much as digits as its factorization.

129629 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1944, while the sum is 29.

The square root of 129629 is about 360.0402755248. The cubic root of 129629 is about 50.6097342581.

Subtracting from 129629 its sum of digits (29), we obtain a square (129600 = 360²).

The spelling of 129629 in words is "one hundred twenty-nine thousand, six hundred twenty-nine".